Which of the following symbol represents half-life?

A. Ea

B. t 1/2

C. beta

D. alpha

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles